feat: upgrade nixpkgs to 23.11

modules/nixos/core-desktop.nix

@@ -60,10 +60,14 @@
   # https://github.com/rvaiya/keyd
   services.keyd = {
     enable = true;
-    settings = {
-      main = {
-        # overloads the capslock key to function as both escape (when tapped) and control (when held)
-        capslock = "overload(control, esc)";
+    keyboards = {
+      default = {
+        settings = {
+          main = {
+            # overloads the capslock key to function as both escape (when tapped) and control (when held)
+            capslock = "overload(control, esc)";
+          };
+        };
       };
     };
   };
@@ -152,10 +156,10 @@
   # all fonts are linked to /nix/var/nix/profiles/system/sw/share/X11/fonts
   fonts = {
     # use fonts specified by user rather than default ones
-    enableDefaultFonts = false;
+    enableDefaultPackages = false;
     fontDir.enable = true;
 
-    fonts = with pkgs; [
+    packages = with pkgs; [
       # icon fonts
       material-design-icons
       font-awesome